species Euglesa ventricosa (Prime, 1851): synonymy

Pisidium ventricosum Prime, 1851

Prime, 1851. Proc. Boston Soc. Nat. Hist. 4: 68.
Prime, 1852. Boston J. Nat. Hist. 6(3): 355, pl. 11, figs. 16-18.
Prime, 1865. Smithsonian Misc. Coll. (145): 72, figs. 79-80.

Pisidium obtusale — Herrington (1962)
Pisidium (Cyclocalyx) ventricosum (s. str.) — Clarke (1973)
Pisidium (Cyclocalyx) ventricosum — Burch (1975), Mackie (2007), Bespalaya et al. (2017)
Pisidium ventricosum f. ventricosum — Mackie et al. (1980)
Pisidium ventricosum — Turgeon et al. (1998), Schultheiß et al. (2008), Bogan (2010), IUCN (2011), ITIS (2012), Clewing et al. (2013), Saito et al. (2022)
Euglesa ventricosa — Vinarski et al. (2020), Bogan et al. (2026)
Euglesa (s.s.) ventricosa — Bespalaya et al. (2024)

Pera gibba Leach, 1852

Leach, 1852. Syn. Moll. Gr. Brit.: 292.

Pisidium obtusale var. fragile Clessin in Westerlund, 1873

(intro'd as intra-sp. of Pisidium obtusale Pfeiffer, 1821)
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 520.

Pisidium vesiculare Sterki, 1896

Sterki, 1896. Nautilus 10(2): ??.

Pisidium obtusale — Herrington (1962)
Pisidium (Cyclocalyx) ventricosum — Burch (1975)

Pisidium vesiculare var. striatellum Sterki, 1916

(intro'd as intra-sp. of Pisidium vesiculare Sterki, 1896)
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.

Pisidium (Cyclocalyx) ventricosum — Burch (1975), Mackie (2007)

Pisidium obtusale Pfeiffer, 1821

(misidentified reference to Cyclas obtusalis Lamarck, 1818)
Pfeiffer, 1821. Naturgesch. Dtsch. Land-Süßw. Moll. 1: 125, pl. 5, figs. 21-22.

Pisidium obtusale — Thiele (1934), Herrington (1962), Contreras-Arquieta (2000)
Pisidium (Eupisidium) obtusale — Mandahl-Barth (1938)
Pisidium (Cyclocalyx) obtusale — Clarke (1973)
Pisidium (Cyclocalyx) ventricosum — Clarke (1973), Burch (1975), Mackie (2007)
Cyclocalyx (s.s.) obtusalis — Starobogatov et al. (2004)
Euglesa obtusalis — Vinarski et al. (2020)
Euglesa ventricosa — Bogan et al. (2026)

Pisidium mininum Benoit, 1875

(misidentified reference to Cyclas minima Studer, 1820)
‘Studer’ Benoit, 1875. Bull. Soc. Malac. Ital. 1: 163.